Follow up the "Aux file" on "Edit group" doesn't support relative sub-directories path

CHANGELOG.md

@@ -22,6 +22,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 ### Fixed
 
 - We fixed an issue when checking for a new version when JabRef is used behind a corporate proxy. [#7884](https://github.com/JabRef/jabref/issues/7884)
+- We fixed an issue where the `Aux file` on `Edit group` doesn't support relative sub-directories path to import. [#7719](https://github.com/JabRef/jabref/issues/7719).
 - We fixed an issue where it was impossible to add or modify groups. [#7912](https://github.com/JabRef/jabref/pull/793://github.com/JabRef/jabref/pull/7921)
 - We fixed an issue where exported entries from a Citavi bib containing URLs could not be imported [#7892](https://github.com/JabRef/jabref/issues/7882)
 

src/main/java/org/jabref/gui/groups/GroupDialogViewModel.java

@@ -231,8 +231,8 @@ private void setupValidation() {
                     if (StringUtil.isBlank(input)) {
                         return false;
                     } else {
-                        Path texFilePath = preferencesService.getWorkingDir().resolve(input);
-                        if (!Files.isRegularFile(texFilePath)) {
+                        Path inputPath = getAbsoluteTexGroupPath(input);
+                        if (!inputPath.isAbsolute() || !Files.isRegularFile(inputPath)) {
                             return false;
                         }
                         return FileUtil.getFileExtension(input)
@@ -267,6 +267,16 @@ private void setupValidation() {
         });
     }
 
+    /**
+     * Gets the absolute path relative to the LatexFileDirectory, if given a relative path
+     * @param input the user input path
+     * @return an absolute path if LatexFileDirectory exists; otherwise, returns input
+     */
+    private Path getAbsoluteTexGroupPath(String input) {
+        Optional<Path> latexFileDirectory = currentDatabase.getMetaData().getLatexFileDirectory(preferencesService.getUser());
+        return latexFileDirectory.map(path -> path.resolve(input)).orElse(Path.of(input));
+    }
+
     public void validationHandler(Event event) {
         ValidationStatus validationStatus = validator.getValidationStatus();
         if (validationStatus.getHighestMessage().isPresent()) {

src/test/java/org/jabref/gui/groups/GroupDialogViewModelTest.java

@@ -0,0 +1,77 @@
+package org.jabref.gui.groups;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Optional;
+
+import org.jabref.gui.DialogService;
+import org.jabref.model.database.BibDatabaseContext;
+import org.jabref.model.groups.AbstractGroup;
+import org.jabref.model.metadata.MetaData;
+import org.jabref.preferences.PreferencesService;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class GroupDialogViewModelTest {
+
+    private GroupDialogViewModel viewModel;
+    private Path temporaryFolder;
+    private BibDatabaseContext bibDatabaseContext;
+    private final MetaData metaData = mock(MetaData.class);
+
+    @BeforeEach
+    void setUp(@TempDir Path temporaryFolder) throws Exception {
+        this.temporaryFolder = temporaryFolder;
+        bibDatabaseContext = new BibDatabaseContext();
+        DialogService dialogService = mock(DialogService.class);
+
+        AbstractGroup group = mock(AbstractGroup.class);
+        when(group.getName()).thenReturn("Group");
+
+        PreferencesService preferencesService = mock(PreferencesService.class);
+        when(preferencesService.getKeywordDelimiter()).thenReturn(',');
+        when(preferencesService.getUser()).thenReturn("MockedUser");
+
+        bibDatabaseContext.setMetaData(metaData);
+
+        viewModel = new GroupDialogViewModel(dialogService, bibDatabaseContext, preferencesService, group, GroupDialogHeader.SUBGROUP);
+    }
+
+    @Test
+    void validateExistingAbsolutePath() throws Exception {
+        var anAuxFile = temporaryFolder.resolve("auxfile.aux").toAbsolutePath();
+
+        Files.createFile(anAuxFile);
+        when(metaData.getLatexFileDirectory(any(String.class))).thenReturn(Optional.of(temporaryFolder));
+
+        viewModel.texGroupFilePathProperty().setValue(anAuxFile.toString());
+        assertTrue(viewModel.texGroupFilePathValidatonStatus().isValid());
+    }
+
+    @Test
+    void validateNonExistingAbsolutePath() throws Exception {
+        var notAnAuxFile = temporaryFolder.resolve("notanauxfile.aux").toAbsolutePath();
+        viewModel.texGroupFilePathProperty().setValue(notAnAuxFile.toString());
+        assertFalse(viewModel.texGroupFilePathValidatonStatus().isValid());
+    }
+
+    @Test
+    void validateExistingRelativePath() throws Exception {
+        var anAuxFile = Path.of("auxfile.aux");
+
+        // The file needs to exist
+        Files.createFile(temporaryFolder.resolve(anAuxFile));
+        when(metaData.getLatexFileDirectory(any(String.class))).thenReturn(Optional.of(temporaryFolder));
+
+        viewModel.texGroupFilePathProperty().setValue(anAuxFile.toString());
+        assertTrue(viewModel.texGroupFilePathValidatonStatus().isValid());
+    }
+}